GB677883A - Improvements in or relating to electric discharge devices - Google Patents

Improvements in or relating to electric discharge devices

Info

Publication number
GB677883A
GB677883A GB1208948A GB1208948A GB677883A GB 677883 A GB677883 A GB 677883A GB 1208948 A GB1208948 A GB 1208948A GB 1208948 A GB1208948 A GB 1208948A GB 677883 A GB677883 A GB 677883A
Authority
GB
United Kingdom
Prior art keywords
cathodes
per cent
plate
electric discharge
anode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1208948A
Inventor
George Hubert Hough
Leslie Charles Baker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB1208948A priority Critical patent/GB677883A/en
Publication of GB677883A publication Critical patent/GB677883A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/38—Cold-cathode tubes
    • H01J17/48—Cold-cathode tubes with more than one cathode or anode, e.g. sequence-discharge tube, counting tube, dekatron
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/007—Sequential discharge tubes

Landscapes

  • Discharge Lamp (AREA)

Abstract

677,883. Discharge apparatus. STANDARD TELEPHONES & CABLES, Ltd. April 29, 1949 [May 3, 1948], No. 12089/48. Class 39 (i). In a cold cathode gas-filled " sequence " electric discharge tube of the type described in Specification 639,827, the cathode glow is confined to the ends of the cathodes 5 facing the anode 9 by means of a " field control plate " 10, of insulating or metallic material, through which the cathodes project. The clearance between the cathodes and the plate is considerably greater than the mean free path of an electron in the gas filling, which comprises 92 per cent neon, 1 per cent argon and 7 per cent hydrogen, at a pressure of 100 mm. of mercury, but is less than the length of the cathode dark space for normal glow discharge. The anode 9 and plate 10 are mounted by means of mica separators 11 secured by support-rods 12 to the press 7.
GB1208948A 1948-05-03 1948-05-03 Improvements in or relating to electric discharge devices Expired GB677883A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1208948A GB677883A (en) 1948-05-03 1948-05-03 Improvements in or relating to electric discharge devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1208948A GB677883A (en) 1948-05-03 1948-05-03 Improvements in or relating to electric discharge devices

Publications (1)

Publication Number Publication Date
GB677883A true GB677883A (en) 1952-08-27

Family

ID=9998204

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1208948A Expired GB677883A (en) 1948-05-03 1948-05-03 Improvements in or relating to electric discharge devices

Country Status (1)

Country Link
GB (1) GB677883A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2990061A (en) * 1960-05-20 1961-06-27 Burroughs Corp Indicator tube
US3101427A (en) * 1960-05-18 1963-08-20 Burroughs Corp Gaseous cold cathode indicator glow tube

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3101427A (en) * 1960-05-18 1963-08-20 Burroughs Corp Gaseous cold cathode indicator glow tube
US2990061A (en) * 1960-05-20 1961-06-27 Burroughs Corp Indicator tube

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